code: def test_to_csv_float_format(self):
      with tm.ensure_clean() as filename:
          ser = Series([0.123456, 0.234567, 0.567567])
          ser.to_csv(filename, float_format="%.2f", header=False)
  
          rs = self.read_csv(filename)
          xp = Series([0.12, 0.23, 0.57])
          tm.assert_series_equal(rs, xp)
  
file_path: pandas/pandas/tests/series/methods/test_to_csv.py
imports: from datetime import datetime
  from io import StringIO
  import numpy
  import pytest
  import pandas
  from pandas import Series
  import pandas._testing
  from pandas.io.common import get_handle
label_desc: Use image node_id 5 for calling the TestSeriesToCSV obj's underlying member method code with example usage: obj.test_to_csv_float_format() without return types